Jadarite—commonly known as kryptonite due to its chemical similarity to the mineral bane of Superman—has only every been ...

Can you name everything from Ac to Zr? Test your knowledge of the periodic table and see if you can top the leaderboard ...

For this element, for actinium, and for polonium, but for none of the others, are the criteria of unique spectrum and chemical character, as found for radium, to be (Continued on page 77) Prof. S ...

One such element is Promethium, and a new study from scientists at Oak Ridge National Laboratory has successfully analyzed chemical properties of the rare earth metal some 80 years after its ...

The government is planning a national rollout of voluntary chemical castration for sex offenders, the justice secretary has said. Shabana Mahmood said she would first expand a small pilot in south ...

Learn about the periodic table of elements. Find lesson plans and classroom activities, view a periodic table gallery, and shop for periodic table gifts.

Each element is distinguished by the number of protons, neutrons and electrons that it possesses. The atoms of each chemical element have a defining and same number of protons and electrons, but – ...

Discover the history, structure, and importance of the periodic table of elements, from Mendeleev’s discovery to modern scientific applications.

Learn about elements, compounds and mixtures in this KS3 Chemistry guide from BBC Bitesize.

Chemical analyses find hidden elements from renaissance astronomer Tycho Brahe's alchemy laboratory In the Middle Ages, alchemists were notoriously secretive and didn't share their knowledge with ...

The table offers, at a glance, a reference to how an element might behave in a chemical reaction, and clues to its similarity to other elements in a group.

The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...